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Title: Parana basin

Abstract

The Parana basin is a large intracratonic basin in South America, developed entirely on continental crust and filled with sedimentary and volcanic rocks ranging in age from Silurian to Cretaceous. It occupies the southern portion of Brazil (1,100,000 km/sup 2/ or 425,000 mi/sup 2/) and the eastern half of Paraguay (100,000 km/sup 2/ or 39,000 mi/sup 2/); its extension into Argentina and Uruguay is known as the Chaco-Parana basin. Five major depositional sequences (Silurian, Devonian, Permo-Carboniferous, Triassic, Juro-Cretaceous) constitute the stratigraphic framework of the basin. The first four are predominantly siliciclastic in nature, and the fifth contains the most voluminous basaltic lava flows of the planet. Maximum thicknesses are in the order of 6000 m (19,646 ft). The sequences are separated by basin wide unconformities related in the Paleozoic to Andean orogenic events and in the Mesozoic to the continental breakup and sea floor spreading between South America and Africa. The structural framework of the Parana basin consists of a remarkable pattern of criss-crossing linear features (faults, fault zones, arches) clustered into three major groups (N45/sup 0/-65/sup 0/W, N50/sup 0/-70/sup 0/E, E-W). The northwest- and northeast-trending faults are long-lived tectonic elements inherited from the Precambrian basement whose recurrent activity throughoutmore » the Phanerozoic strongly influenced sedimentation, facies distribution, and development of structures in the basin. Thermomechanical analyses indicate three main phases of subsidence (Silurian-Devonian, late Carboniferous-Permian, Late Jurassic-Early Cretaceous) and low geothermal gradients until the beginning of the Late Jurassic Permian oil-prone source rocks attained maturation due to extra heat originated from Juro-Cretaceous igneous intrusions. The third phase of subsidence also coincided with strong tectonic reactivation and creation of a third structural trend (east-west).« less

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Petrobras/Depex/Cenpes, Rio de Janeiro, Brazil
OSTI Identifier:
5865273
Report Number(s):
CONF-870606-
Journal ID: CODEN: AABUD
Resource Type:
Conference
Journal Name:
AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States)
Additional Journal Information:
Journal Volume: 71:5; Conference: American Association of Petroleum Geologists annual meeting, Los Angeles, CA, USA, 7 Jun 1987
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; BRAZIL; PETROLEUM DEPOSITS; SEDIMENTARY BASINS; RESERVOIR ROCK; SOURCE ROCKS; CRETACEOUS PERIOD; DEVONIAN PERIOD; GEOLOGIC FAULTS; JURASSIC PERIOD; MISSISSIPPIAN PERIOD; PENNSYLVANIAN PERIOD; PERMIAN PERIOD; SILURIAN PERIOD; TRIASSIC PERIOD; DEVELOPING COUNTRIES; GEOLOGIC AGES; GEOLOGIC DEPOSITS; GEOLOGIC FRACTURES; GEOLOGIC STRUCTURES; LATIN AMERICA; MESOZOIC ERA; MINERAL RESOURCES; PALEOZOIC ERA; RESOURCES; SOUTH AMERICA; 020200* - Petroleum- Reserves, Geology, & Exploration

Citation Formats

Zalan, P V, Wolff, S, Conceicao, J C.J., Vieira, I S, Astolfi, M A, Appi, V T, Zanotto, O, Neto, E V.S., and Cerqueira, J R. Parana basin. United States: N. p., 1987. Web.
Zalan, P V, Wolff, S, Conceicao, J C.J., Vieira, I S, Astolfi, M A, Appi, V T, Zanotto, O, Neto, E V.S., & Cerqueira, J R. Parana basin. United States.
Zalan, P V, Wolff, S, Conceicao, J C.J., Vieira, I S, Astolfi, M A, Appi, V T, Zanotto, O, Neto, E V.S., and Cerqueira, J R. 1987. "Parana basin". United States.
@article{osti_5865273,
title = {Parana basin},
author = {Zalan, P V and Wolff, S and Conceicao, J C.J. and Vieira, I S and Astolfi, M A and Appi, V T and Zanotto, O and Neto, E V.S. and Cerqueira, J R},
abstractNote = {The Parana basin is a large intracratonic basin in South America, developed entirely on continental crust and filled with sedimentary and volcanic rocks ranging in age from Silurian to Cretaceous. It occupies the southern portion of Brazil (1,100,000 km/sup 2/ or 425,000 mi/sup 2/) and the eastern half of Paraguay (100,000 km/sup 2/ or 39,000 mi/sup 2/); its extension into Argentina and Uruguay is known as the Chaco-Parana basin. Five major depositional sequences (Silurian, Devonian, Permo-Carboniferous, Triassic, Juro-Cretaceous) constitute the stratigraphic framework of the basin. The first four are predominantly siliciclastic in nature, and the fifth contains the most voluminous basaltic lava flows of the planet. Maximum thicknesses are in the order of 6000 m (19,646 ft). The sequences are separated by basin wide unconformities related in the Paleozoic to Andean orogenic events and in the Mesozoic to the continental breakup and sea floor spreading between South America and Africa. The structural framework of the Parana basin consists of a remarkable pattern of criss-crossing linear features (faults, fault zones, arches) clustered into three major groups (N45/sup 0/-65/sup 0/W, N50/sup 0/-70/sup 0/E, E-W). The northwest- and northeast-trending faults are long-lived tectonic elements inherited from the Precambrian basement whose recurrent activity throughout the Phanerozoic strongly influenced sedimentation, facies distribution, and development of structures in the basin. Thermomechanical analyses indicate three main phases of subsidence (Silurian-Devonian, late Carboniferous-Permian, Late Jurassic-Early Cretaceous) and low geothermal gradients until the beginning of the Late Jurassic Permian oil-prone source rocks attained maturation due to extra heat originated from Juro-Cretaceous igneous intrusions. The third phase of subsidence also coincided with strong tectonic reactivation and creation of a third structural trend (east-west).},
doi = {},
url = {https://www.osti.gov/biblio/5865273}, journal = {AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States)},
number = ,
volume = 71:5,
place = {United States},
year = {Fri May 01 00:00:00 EDT 1987},
month = {Fri May 01 00:00:00 EDT 1987}
}

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